microbial vitamin

mi·cro·bi·al vi·ta·min

a substance necessary for the growth of certain microorganisms, for example, biotin, p-aminobenzoic acid.
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The enzyme 1-deoxy-D-xylulose-5-phosphate synthase (DXS) catalyses the first and rate-limiting step of the MEP pathway and it is also involved in microbial vitamin B1 and vitamin B6 biosynthesis, making it an interesting target in microbes.
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